"The Last Supper" is thought to have been a Passover seder. That supper was the source of Communion: "For as often as you eat this bread and drink this cup, you proclaim the Lord's death until he comes again."
In our church, we remember this event with a group Passover supper on Maundy (Middle English, "holy") Thursday, eaten in silence. No wine, though, as a consideration to the abstinent.
Below, Bassano's Last Supper (1542), depicting the reaction to Jesus' prediction that one of them would betray him.
